Brasher Falls is the largest hamlet and a census-designated place (CDP) in the town of Brasher in St. Lawrence County, New York, United States.

The community is in northeastern St. Lawrence County, in the southwestern corner of the town of Brasher.

It sits on both sides of the St. Regis River, which drops 25 feet (7.6 m) in elevation through the hamlet, on its way north to join the St. Lawrence River in Quebec, Canada.

New York State Route 11C runs through Brasher Falls, leading southwest through Winthrop 4 miles (6 km) to U.S. Route 11 in Stockholm Center, and 7 miles (11 km) east and south to rejoin Route 11 at Coteys Corner in Lawrence.

The Dr. Buck–Stevens House, an octagon house listed on the National Register of Historic Places, is on West Main Street in the hamlet.